Download
Share
Print this page
Toshiba Solid State Service Manual
  1. Manuals
  2. Brands
  3. Toshiba Manuals
  4. TV Receiver
  5. Solid State
  6. Service manual
Toshiba Solid State Service Manual

Toshiba Solid State Service Manual

25"/29"/34"/38" solid state color television receiver
Hide thumbs

Advertisement

Quick Links

Download this manual
SERVICE MANUAL
This manual is the latest at the time of printing, and does not include the modification
which may be made after the printing, by the constant improvment of product.
Document : ___________
SM - 74PM
Checked by : ________________________________________________________
25"/29"/34"/38"
SOLID STATE
Color Television
Receiver
25-01-2002
Date ___________
(NTSC-M MTS STEREO)
TOSHIBA I C
TB1253AN +TMP88PS38N
Approved by : ___________
( WU GUO XIAN)
2
IC

Advertisement

loading

Related Manuals for Toshiba Solid State

Summary of Contents for Toshiba Solid State

  • Page 1 SERVICE MANUAL 25"/29"/34"/38" SOLID STATE Color Television Receiver (NTSC-M MTS STEREO) TOSHIBA I C TB1253AN +TMP88PS38N This manual is the latest at the time of printing, and does not include the modification which may be made after the printing, by the constant improvment of product.
  • Page 2 CONTENTS 1. SPECIFICATION........2. BLOCK DIAGRAM........3. ALIGMENT INSTRUCTION....... 4. VOLTAGE TABLE........5. IC601 DATA........... 6. TROUBLE SHOOTING......This manual is the latest at the time of Printing , and does not include the modification Which may be made ofter the Printing, by the Constant improvement of Product.
  • Page 3 DATE :17-7-2001 ART-TECH PROJECT ENGINEERING LTD MODEL :25 ~ 38 TV SPECIFICATION SUPPLY VOLTAGE: AC110-220V +10% 60Hz 1. SYSTEM NTSC-M NORMAL - TV CATV 2. CHANNEL L-VHF 2 - 6 (A-8) A - 5 ~ B H-VHF 7 - 13 C ~ W + 11 14 - 69 W + 12 ~ W + 84...
  • Page 4 STANDARD UNIT 26. RASTER DISTORTION < 5 27. REMOTE CONTROL DISTANCE > 5 METER > +15 DEGREE ANGLE <120 <150 <170 WATTS 28. POWER CONSUMPTION (AT MAX. CONDITION) < 120 POWER CONSUMPTION (AT MAX. CONDITION) <150 <180 <180 WATTS < 150 29.
  • Page 5 BLOCK DIAGRAM...
  • Page 6 IC 401 IC 201 IC 602 LA7841 LA4445 ST24C08 Vertical OUTPUT OUTPUT STAGE Vcc NCN INV.INPUT INVERTIND INPUT PUMP UP OUT OUT2 OUT1 SM-74PM P.5...
  • Page 7 IC801 IC802 TA1219AN TC94A45P Det in LoutTV RoutTV Det Select Y OUT Vout1 Lin TV BIAS2 Lout1 Rin TV VIDEO IN C OUT Vin TV Y OUT BIAS3 BIAS1 Lin V1 R OUT1 VFIL C OUT Rin V1 CKIN Vin V1 LinS1 Y/VinS1 RinV2...

  • Page 8: Alignment Instruction

    ALIGNMENT INSTRUCTION I. PLEASE READ BEFORE ATTEMPTING SERVICE 1. Never disconnect any leads while receiver is in operation. 2. Disconnect all power before attempting any repairs. 3. Do not short any portion of the circuit while power is on. 4. For safety reasons, all parts replaced should be identical, ( for parts and part numbers see parts list ). 5.
  • Page 9 VII. VERTICAL S-CORRECTION ADJUSTMENT 1. Receive Cross hatch Pattern 2. Select VSC item adjust value to normal,regular picture. VIII. VERTICAL CENTER ADJUSTMENT NTSC (60Hz) Adjustment (1). Receive Monscope Pattern (60Hz). (2). Select VP60 item adjust value to obtain the picture at center. IX.
  • Page 10 XV. BTSC INPUT LEVEL ALIGNMENT 1. Receive a Colour Bar Pattern (set to 100% modulation at 300Hz mono). 2. Connect oscilloscope to monitor IC001 (TPL or TPR ). 3. Adjust BTSC INPUT to obtain amplitude1.4V P-P +5%. XVI. BTSC STEREO/SAP AUTOMATIC ALIGNMENT 1.
  • Page 11 XXII. HIGH POT TESTING 1. Short the L- pole and N- pole of AC line cord. 2. Switch on the power Switch of the TV set. 3. Connect the High Pot Tester ( - ) to L and N Pole, ( + ) to the METAL PART of CABINET. CONDITION TEST STANDARN TEST STANDARD...
  • Page 12 VOLTAGE TABLE FOR IC ( ONLY FOR REFERENCE ) IC 601 IC 101 IC 001 IC902 Q905 TB1253AN TMP88PS38N TDA 9855 SE135 P621 2.98 135.3 61.2 0.13 60.4 60.2 0.13 0.13 IC402 7809 IC103 KA7805 IC601 KA7805 15.5 IC102 PQ09RD21 21.5 15.75 NOTE: VOLTAGE ARE TAKEN UNDER TUNED CONDITION WITH...
  • Page 13 VOLTAGE TABLE FOR IC ( ONLY FOR REFERENCE ) IC 602 IC 901 IC801 IC 401 IC 801 IC 201 LA7841 ST24C08 STRS6709 TC90A45P TA1219AN LA4445 6.75 3.55 2.85 14.2 0.03 26.5 3.53 3.85 21.3 3.84 0.03 2.75 20.3 10.8 21.5 4.96 NOTE: VOLTAGE ARE TAKEN UNDER TUNED CONDITION WITH...
  • Page 14 VOLTAGE TABLE FOR TRANSISTOR (ONLY FOR REFERENCE) SYMBOL B (V) C (V) E (V) SYMBOL B (V) C (V) E (V) Q502 109.7 Q001 4.83 Q503 108.7 Q003 5.30 3.16 Q504 Q004 5.25 Q505 Q005 8.64 1.86 Q506 Q101 Q508 2.45 Q102 4.53...
  • Page 15 25”~38” PRESET PRESET 25”~38” ITEM SYMBOL SYMBOL ITEM DATA DATA DATA DATA VSM2 RCUT VSM3 GCUT MOD0 BCUT MOD1 GDRV MOD2 BDRV MOD3 CNTX PYNX BRTC PYNN COLC PYXS TNTC PYNS SCOL ONTM SCNT CNTC CNTN STNT BRTX SCOX BRTN SCON COLX STNX...

  • Page 16: Troubleshooting

    Trouble Shooting 1. No power 1) Check F901 Check the voltage IF F901 is broken, replace it after checking this between + and - of C914 BR901 Check the PIN 1 of IC901 Check T901 Check Q901. ZD901. IC901 Check the PIN 9 of IC901 Check the voltage Check FB904.
  • Page 17 2.No Raster Heater Voltage is OK but No Raster Increase Screen Voltage by turn right screen volume check the Appear Raster check T402 voltage between (with Vertical retrace line) check D403 + and - C407 check Q501. 502. Q503 Readjust screen Voltage Check the voltage at pin 14.15.16 of IC 101 check IC 101...
  • Page 18 3.Vertical Line(Reference Line) START Check voltage CheckC408. D402.R405 at IC401 PIN6 26V Check IC 401 Check IC101 PIN38 PIN5(V- WAVE) Check the waveform Check IC401 PIN4 (3.84V) IC 401 PIN2(V-OUT) Check IC 401 Check DY CONNECTOR SM-74PM.P17...
  • Page 19 4.No Sound(Picture OK) START Check voltage Check R211. Q204.Q205 at IC201 PIN9 20V R213.D911.C924.C218 Check the IC201 Check IC301 PIN6.47 PIN2,5 AUDIO SIGNAL Check the IC 201 Check IC201,C207 of PIN4(20V) Check the speaker Check R. L speaker wire PIN +. - Check the R.